An example of norms that are not equivalent

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SUMMARY

This discussion focuses on identifying two norms on a vector space that are not equivalent, specifically within the context of infinite-dimensional spaces. The Euclidean norm and the max norm are proposed, but the more relevant example involves the sup norm and the L1 norm on the space C[0,1], which consists of continuous functions on the unit interval. The conclusion emphasizes that norms in finite-dimensional vector spaces are always equivalent, while infinite-dimensional spaces allow for non-equivalent norms.

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  • Understanding of vector spaces and their properties
  • Familiarity with norm definitions and equivalence
  • Knowledge of continuous functions and function spaces
  • Basic concepts of sup norm and L1 norm
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Homework Statement


Give an example of two norms on a vector space that are not equivalent.


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The Attempt at a Solution



Hi everyone,

I know the definition for equivalent norms. I also know that norms on a finite dimensional vector space are equivalent. So clearly the vector space has to be infinitely dimensional.
In which case can you take the normal euclidean norm and the max norm? And if not, could someone please point me in the right direction?

Thanks for any help
 
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Consider C[0,1] - continuous functions on the unit interval. Try the sup norm and L1 norm.
Of course there are a lot of different examples, depending on what stuff you are comfortable with.
 
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